Computations for approximations and alternatives for the 'DPQ' (Density (pdf), Probability (cdf) and Quantile) functions for probability distributions in R. Primary focus is on (central and non-central) beta, gamma and related distributions such as the chi-squared, F, and t. – This is for the use of researchers in these numerical approximation implementations, notably for my own use in order to improve standard R pbeta(), qgamma(), ..., etc: {'"dpq"'-functions}.

Version: | 0.5-1 |

Depends: | R (≥ 3.6.0) |

Imports: | stats, graphics, methods, utils, sfsmisc (≥ 1.1-10) |

Suggests: | Rmpfr, DPQmpfr (≥ 0.3-1), gmp, Matrix, MASS, mgcv, scatterplot3d, akima |

Published: | 2021-12-13 |

Author: | Martin Maechler [aut, cre], Morten Welinder [ctb] (pgamma C code, see PR#7307, Jan. 2005; further pdhyper()), Wolfgang Viechtbauer [ctb] (dtWV(), 2002), Ross Ihaka [ctb] (src/qchisq_appr.c), Marius Hofert [ctb] (lsum(), lssum()), R-core [ctb] (src/{dpq.h, algdiv.c, pnchisq.c, bd0.c}), R Foundation [cph] (src/qchisq-appr.c) |

Maintainer: | Martin Maechler <maechler at stat.math.ethz.ch> |

BugReports: | https://r-forge.r-project.org/tracker/?atid=2462&group_id=611 |

License: | GPL-2 | GPL-3 [expanded from: GPL (≥ 2)] |

URL: | https://specfun.r-forge.r-project.org/, https://r-forge.r-project.org/R/?group_id=611 |

NeedsCompilation: | yes |

Materials: | NEWS |

In views: | Distributions |

CRAN checks: | DPQ results |

Reference manual: | DPQ.pdf |

Vignettes: |
Noncentral Chi-Squared Probabilities – Algorithms in R Computing Beta(a,b) for Large Arguments log1pmx, bd0, stirlerr - Probability Computations in R |

Package source: | DPQ_0.5-1.tar.gz |

Windows binaries: | r-devel: DPQ_0.5-1.zip, r-release: DPQ_0.5-1.zip, r-oldrel: DPQ_0.5-1.zip |

macOS binaries: | r-release (arm64): DPQ_0.5-1.tgz, r-oldrel (arm64): DPQ_0.5-1.tgz, r-release (x86_64): DPQ_0.5-1.tgz, r-oldrel (x86_64): DPQ_0.5-1.tgz |

Old sources: | DPQ archive |

Reverse imports: | DPQmpfr |

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